baber/WOPTO huggingface dataset:
Patent GB-933447-A (GB)
Title: Improvements in or relating to rotary electric machines
IPC: H02K3/26
Filed: 1960-06-09
Abstract: 933,447. Dynamo-electric machines. NORMACEM. June 9, 1960 [July 31, 1959], No. 20295/60. Class 35. A rotary electric machine comprises an assembly of two rotors mounted for rotation relatively to a stator element so as to define a planar air gap between the stator and one of the rotors, and at least the rotor or the stator element includes a flat winding formed by strip conductors on opposite faces of an insulating support. In the multipolar D.C. motor or generator shown in Fig. 1, two rotary armatures 1, 2 are secured to a common rotary shaft 4 and a winding surface of each is engaged by brushes 14, and the stator comprises stationary magnetic yokes 7, 8, 13 and permanent magnets 9, 10 having widened polepieces 11, 12. In another embodiment, Fig. 2, a shaft 20 carries two single armatures 18 and a double armature 19a, 19b stuck to an insulating drive-transmitting support 19c and their windings are engaged by brushes 29 carried via spring strips 29a by rings 31 insulated by rings 30; the stator includes two magnetized hard ferrite rings 26 having deposits 32 which conduct current from lead-ins 33 to the brushes of armature 19. Fig. 3 shows a multipolar A.C. machine comprising a plurality e.g. three discshaped rotors 34 either slotted at 35 to form a squirrel-cage or made of low-hysteresis laminations, and secured by a sleeve 37 to a rotary shaft 36; the stator comprises either four toroidal soft ferrite yokes 38, 39 carrying windings 40 or, Fig. 7, two end yokes F carrying windings and further windings devoid of yokes. The stator assembly is clamped by screwthreaded metal rods 60, and copper tubes 58, 59 form the winding terminals. The yokes alternatively may be spiralled laminations. Reference has been directed by the Comptroller to Specifications 874,394 and 888,515.
Patent GB-669738-A (GB)
Title: Improvements in and relating to thermoplastics
Inventor: STURM ROBERT HEINRICH
IPC: C09D4/00
Filed: 1948-07-30
Abstract: In producing coated, printed, or laminated articles a solution of a partly polymerized acrylic or methacrylic ester in a volatile solvent is applied to a surface of a sheet of a polymerized acrylic or methacrylic ester, the solvent is removed, and the body is subjected to heat and pressure in order to complete the polymerization of the partly polymerized ester.  The solution of the partial polymer may also contain a fully polymerized acrylic or methacrylic ester.  The complete or partial polymer may be made from methyl, ethyl, butyl, or n-hexyl acrylate, or from methyl, isobutyl, phenyl or cyclohexyl methacrylate or glycol dimethacrylate.  In examples (1) a coating or laminating composition is made by mixing a solution of polyethyl acrylate in xylene, cyclohexanone, and butyl lactate, into which if desired, pigments may be ground, with a solution of a partial polymer made by heating a mixture of methyl methacrylate, butyl acetate, p tetrahydronaphthalene, and benxoyl peroxide; (2) carbon black pigment is finely ground into a solution of polycyclohexyl methacrylate and polymethyl methacrylate in xylene, toluene, cyclohexanone, butyl alcohol, and butyl lactate, and the resulting pigmented composition is mixed with the partial polymer of example (1).
Patent GB-480508-A (GB)
Title: Improvements in or relating to machines for extruding plastics, in particular rubber compositions
IPC: B29C48/07
Filed: 1937-07-22
Abstract: 480,508. Extrusion machines. SOC. ITALIANA PIRELLI. July 22, 1937, No. 20376. Convention date, July 23, 1936. [Class 87 (ii)] An extrusion machine, particularly for rubber compositions, has one half of the head 1 fixed to the machine while the other half 2 is hingedly mounted thereon so as to expose the interior of the head for cleaning, complementary abutments 6, 7 being provided on the two halves to relieve the strain on the pivot pin 3 during extrusion. The two halves are clamped in closed position by bolts pivoted on the lower half 1. Cavities 4, 5 are provided for heating or cooling media and means may be provided for facilitating the opening of the head.
Patent GB-695806-A (GB)
Title: Improvements in or relating to automatic electric control circuits
IPC: H05B1/02
Filed: 1950-08-16
Abstract: 695,806. Control systems for heating resistors. AIR CONTROL INSTALLATIONS, Ltd., and FRAPWELL, S. A. Aug. 16, 1951 [Aug. 16, 1950], No. 20381/50. Class 38 (iv). A heating resistor 11, particularly for regenerating water-absorbing material, is cut out by a thermostatic type of switch 16 when the material reaches a predetermined temperature, the heating circuit being then maintained open -in spite of subsequent re-closure of the thermostat contacts-by the opening of a thermal switch having a heater 12 and normally open contacts 13,- both in series with the thermostat contacts across the source 23. 24. A starting circuit, comprising a manually operable switch 22 and a further thermal switch 14, 15, is provided to establish initial completion of the series circuit independently of the contacts 13 and also to cloae the load circuit. Under the action of heater 15, the contacts 14 of the further thermal switch eventually open to interrupt the starting circuit; contacts 13 of the first thermal switch, however, close in the meantime under the action of heater 12 and then remain so until the thermostat contacts open, whereupon contacts 13 open and disconnect the load. A switch 32 ganged to switch 22 controls a fan 29 associated with the regeneration operation. Further thermal switches 112, 113 and 114, 115 may be associated with a heating resistor 111 of a second regenerator controlled by the same thermostatic switch, the switches 22. 32 being of the change-over type so that the two heaters 11, 111 can be put into service sequentially. In modified arrangements the switch 14, 15 has normally-open contacts. The load resistor 11 may be switched by a further thermal switch controlled by the contacts 13, 14.
Patent GB-571191-A (GB)
Title: Improvements in connection with the bending of metal tubes
IPC: B21D9/16
Filed: 1944-01-07
Abstract: 571,191. Bending tubes. DRAPER, F. C. Jan. 7, 1944, No. 20419/43. [Class 83 (iv)] Tubes are bent by first elongating the walls thereof in the region required and then bending the tube to the shape required. The elongation may be effected by forming corrugations of gradually increasing depth round the tube from the part of the tube wall b which is to lie on the inside of the bend to the part a which is to lie on the outside of the bend. The corrugations may be annular or helical and may be pressed into the tube as shown in Fig. 1, or pressed out beyond the normal diameter of the tube. Bending is effected as described in Specification 571,192 by clamping the tube on a former 3 and causing a grooved slipper 6 to be rolled round the former by engagement with rollers 9 on a member 9a mounted in a sweep arm lever 7 pivoted at 10, the slipper having gear teeth 12 co-operating with gear teeth 13 on the former. During bending, the corrugations are smoothed out by the slipper 6. The tube is first sealed at one end by a plug la and supplied with fluid by connecting its other end by a flexible tube 18a to a pipe 18 leading from a control valve 17 which may be connected either to a reservoir 15 or to an accumulator 16, or placed in a neutral position. A hand pump 14 takes its supply from the reservoir 15 and delivers fluid under pressure to the accumulator 16 and thence to the tube 18, the pressure being indicated by a gauge 22. The fluid may be pumped back into the reservoir from a draining tray 20 by a pump 21. For bends of non- uniform curvature, the amount of elongation is varied accordingly. The Provisional Specification refers to Specification 567,753.
Patent GB-1364166-A (GB)
Title: Aliphatically unsaturated organopolysiloxanes
IPC: C07F7/08
Filed: 1972-05-02
Abstract: 1364166 Polysiloxanes and polymers thereof GENERAL ELECTRIC CO 2 May 1972 20450/72 Headings C3S C3T and C3P Novel polysiloxanes of the formula wherein each R denotes C 1-6  alkyl or cycloalkyl or phenyl, R 1  denotes C 1-6  divalentalkylene, Y denotes vinyl, allyl, methallyl or styryl, Z denotes amino or an aliphatically unsaturated imido radical and n is an integer of at least 1 (e.g. from 1 to 1000 or more), are prepared by reacting together compounds of formulµ in the presence of a base at a temperature of between 25‹ and 200‹ C. to obtain compounds in which Z denotes amino, followed by further reaction with an anhydride of the formula (wherein R<SP>11</SP> denotes a divalent aliphatically unsaturated radical) in the presence of acetic anhydride and sodium acetate to obtain compounds in which Z denotes an aliphatically unsaturated imido radical. Examples describe the preparation of 1-(delta-aminobutyl)-3-vinyltetramethyl disiloxane, 1 - (delta - tetrahydrophthalimido - butyl) - 3 - vinyltetramethyldisiloxane, 1 - (delta - maleimidobutyl) - 3- vinyltetramethyl disiloxane, 1-(delta-3,6-endomethylene - #<SP>4</SP> - tetrahydrophthalimidobutyl)- 3 - vinyltetramethyl disiloxane, 1 - (gammaaminopropyl) - 5 - allylhexamethyltrisiloxane and 1 - (gamma - phthalimidopropyl) - 5 - allylhexamethyl trisiloxane. Uses.-Preparation of addition polymers and for blending with other addition polymers. In an example 1-(delta-maleimidobutyl)-3-vinyltetramethyl disiloxane is polymerized with a dicumyl peroxide catalyst in a dimethylformamide solvent and cast and cured on aluminium sheets.
Patent GB-349818-A (GB)
IPC: G01M1/04
Filed: 1930-07-05
Abstract: 349,818. Testing balance of rotary apparatus. BRITISH THOMSONHOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Thearle, E. L. ; 1225, Myron Street, Schenectady, New York, U.S.A.) July 5, 1930, No. 20456. Convention date, July 5, 1929. [Class 106 (ii).] Comprises an elastically supported cradle to carry the body, means for rotating it, and means connected with the body including a weight free to adjust itself angularly with respect to the means to indicate the angular position to apply correcting masses. The cradle is formed by two tubular longitudinal members 16 connected by transverse members 17 carrying bearings 18 for the rotor A. The cradle is supported from a base by four fulcrum members 19, 20 arranged in pairs which are adjustable so as to lie in the balancing planes of the body each member being formed from strip metal. In addition a set of adjustable horizontal and vertical springs 22, 23 are provided. To the rotor A is attached a balancing head B which is itself carefully balanced. Just inside the rim of the head is inserted a circular ball race in which are mounted one or more balls which when free take up a position to balance the out-of-balance mass in the rotor and are clamped in the position attained by a clutch member. Fig. 3 shows the construction of one fulcrum. The upper end of the strip 19 is secured to an adjustable clamp mounted on the member 16 while the lower end is held between jaws 36, 37 of which the former is part of a cross-bar adjustably clamped to a base. The part 37 is movable by a screw 38 against the influence of a spring strip 39 the edge of which grips the end of strip 19. The head B, Fig. 8, is formed with a boss adapted to be secured to the shaft of the rotor A by a split sleeve 53a. The inner surface of the rim 54 is coned and formed as a ball race 25. A clutch member 56 having a tubular boss 60 sliding on an extension 55 of the hub and guided by pins 57 is normally pressed by a spring 58 so as to clamp the two balls against the race 25. The clutch may be freed by pushing a button 61 acting through friction balls 59. In use the head B is attached to the rotor and the near fulcra 20 released. The rotor is speeded up beyond the critical speed and the clutch freed so that the balls take up a balancing position, the clutch being reclamped. The rotor is allowed to come to rest and a disc 64, Fig. 10, turned so that the zero on the outer scale aligns with the left-hand ball. The reading of the other ball then gives the angle between the balls and this read off on the inner scale gives the half of this angle. The rotor is now turned until a depending pointer from a horizontal straight edge in the same vertical plane as the axis is aligned half-way between the balls. This will indicate the point to place balancing mass in one plane. By clamping the near fulcra and releasing the far fulcra the point in the other balancing plane may be found, using the scale marked " far end " in Fig. 10.
Patent GB-402022-A (GB)
Title: Improvements in or relating to adjustable spanners or wrenches
IPC: B25B13/12
Filed: 1933-07-20
Abstract: 402,022. Sliding - jaw wrenches. WORRALL, H., 45, Beaks Hill Road, Kings Norton, Birmingham and LEE, H. G., 96, Arthur Street, West Bromwich. July 20, 1933, No. 20469. [Class 61 (iii).] The sliding jaw 3 of a wrench is locked in adjusted position on the shank 2 by a set screw 4 engaging an inclined; preferably stepped, surface 5 on the shank. Removal of the set screw may be prevented by upsetting the end, for which purpose a hole 7 is provided in the opposite face of the movable jaw.
Patent GB-788013-A (GB)
Title: Improvements in or relating to the manufacture in continuous form of printed bags ofpolyethylene or other thermoplastic material
Inventor: HAYES FREDERICK THOMAS HENRY
IPC: B31B19/88
Filed: 1955-07-14
Abstract: 788,013. Cutting webs; seaming. METAL BOX CO., Ltd. May 4, 1956 [July 14, 1955], No. 20471/55. Classes 31 (1) and 42 (1). [Also in Group XVII] A machine for making bags from thermoplastic flattened tubular web (see Group XVII) includes sealing and saw-toothed perforating bars 2, 3 which co-operate with a support roll 4 to seal and perforate the web transversely at spaced intervals. The bars 2, 3 are carried on a head 15 spring mounted and adjustable on a pair of connecting rods 18. The rods 18 are supported by crank pins 22, the eccentricity of which relative to shafts 26, 27 is adjustable by screws 23 moving the pins along crank arms 25 rotating with the shafts 26, 27. The shafts 26, 27 are chain and gear driven from a printing impression drum (not shown) and impart to the bars 2, 3 motion in a circular path.
Patent GB-673098-A (GB)
Title: Improvements in or relating to travelling belt printing machines
IPC: B41F17/00
Filed: 1949-08-06
Abstract: 673,098. Printing-machines. SEMPERIT OSTERREICHISCH-AMERIKANISCHE GUMMIWERKE AKT.-GES. Aug. 6, 1949 [Oct. 18, 1948], No. 20493/49. Class 100 (ii). In a printing machine having a printing block carrier in the form of an endless belt or chain, a pair of impression cylinders are provided, one at each of the flat path sections of travel of the carrier. The carrier 1, Fig. 1, runs over guide rollers 2, 3 and carries blocks 1a, 1b, a counterprinting roller 6 being provided, together with impression cylinders 4, 5 and inking-mechanism 7, 8. A paper strip passes from a roll 9 over cylinder 4 to roll' 10 or to cutting-devices 14a and sheet store 14. Similarly, a second strip passes from roll 11 to roll 12 or sheet store 15. Alternatively, sheets from stores 13, 16 may be passed by means of suction devices and endless belts to cylinders 4, 5 and thence to sheet stores 14, 15, clips to secure the sheets being provided on the cylinders. To avoid empty spaces on the printed strip or sheet the supply drive may be intermittent. Several pairs of impression cylinders may be arranged with a longer carrier. In another form, Fig. 2, two printing units are provided in one machine assembly, comprising carriers 16, 17 and impression cylinders 18,'19, 20, 21, arranged at the ends of the flat path sections of the carriers. Inking devices 34 are provided, and secondary belt carriers 35 cooperating with the cylinders 19, 20 for twocolour printing on the same side of a strip. The secondary units may comprise rotary printing cylinders. The cylinders 18, 19, 20, 21 are associated with paper strip supply rolls 22, 23, 24, 25 respectively, and take-up rolls 26, 27, 28, 29 respectively, while the cylinders 18, 19. have a common cutting device 32 and sheet store 30, a similar cutting device 33 and sheet store 31 being associated with the cylinders 20, 21. The strip can pass, for one-colour printing on one side of a strip, (1) from 22 over 18 to 26 or 30, or (2) from 25 over 24 to 29 or 31. It can also pass, for two-colour printing on one side of a strip, (3) from 23 over 19 to 27 or 30, or (4) from 24 over 20 to 28 or 31. For printing on both sides of a strip, the strip can pass along the paths shown in interrupted lines, (5) from 25 over 21 and 18 to 26 or 30 for one-colour printing, or (6) from 23 over 19 and 20 to 28 or 31 for two-colour printing. Since all four impression cylinders can be used at the same time, the above six operations can be carried out simultaneously in one of four groups, comprising respectively operations (1), (2), (3), (4), operations (1), (2), (6), operations (3), (4), (5), and operations (5), (6). A further printing block carrier in travelling belt form may co-operate with one or more of the impression cylinders for additional printing, such as insertions in the stop press column of a newspaper. Specification 640,058 is referred to.
Patent GB-1394201-A (GB)
Title: Apparatus for applying a substantially constant tension to an elongate member connected to an installation subjected to alternating movements
IPC: F15B11/02
Filed: 1972-05-03
Abstract: 1394201 Boring earth &c INSTITUT FRANCAIS DU PETROLE 3 May 1972 [3 May 1971] 20587/72 Heading E1F [Also in Division F1] In apparatus for applying a substantially constant tension to an elongated member (a drill string, not shown) connected to an installation subjected to alternating movement (a floating installation 1) and comprising a source 20 of pressurised hydraulic fluid, a jack 14 or 16 connected to the source and pivoted at 15 or 17, a jack 16 or 14 pivoted at 17 or 15 to the installation and connected to the jack 14 or 16 by an articulated joint 18, a guide 19 for the joint, and a pipe 12 connecting the jack 16 or 14 to a jack 11 supporting the member, the jack 14 or 16 is inclined to the guide all positions of the joint. The apparatus is so dimensioned and the source (a hydro-pneumatic accumulator) is so charged that during vertical movement hm of the installation the pressure in the ram 11 keeps a substantially constant tension in the string which is supported by a hook 3. The axis of the jack 16 may be in line with the guide.
Patent GB-357665-A (GB)
Title: Improved alloys
IPC: C22C38/10
Filed: 1930-07-07
Abstract: Iron alloys contain 15-30 per cent of nickel, 12-40 per cent of cobalt, up to 1 per cent of manganese, and up to 0,5 per cent of carbon, and the proportions of the elements are such that the sum of the nickel, 2,5 times the manganese, and 18 times the carbon, divided by the iron, is 0,5-0,6.
Patent GB-974639-A (GB)
Title: Separation of air
Inventor: SMITH KENNETH CECIL
IPC: F25J3/04
Filed: 1962-05-29
Abstract: 974,639. Cold separation of air. BRITISH OXYGEN CO. Ltd. May 13, 1963 [May 29, 1962], No. 20693/62. Heading F4P. In a two-stage air rectification process for the production of gas containing between 60 and 70% oxygen wherein compressed air is cooled to saturation temperature and freed from condensible impurities in an exchanger 1, Fig. 1, a first liquid fraction containing appreciably less than 60% oxygen is withdrawn from the base of the second rectification column 4 and is partially vaporized in an exchanger 6 warmed by gaseous nitrogen from the head of the first column 2 to produce a second liquid fraction containing 60-70% oxygen which is vaporized in exchanger 1 and into an oxygen-beam gaseous fraction which is returned to the second column 4 whilst nitrogen condensed in exchanger 6 is fed as reflux to both columns 2, 4. The oxygen-rich mixture of liquid and gas produced in exchanger 6 is separated in a chamber 7 and the liquid is expanded in a valve 8 prior to vaporization in exchanger 1. In a modification feed air is cooled in one or other alternating regenerators 12, 13, Fig. 2, from which a side stream is withdrawn and cooled in an exchanger 18 traversed by a portion of nitrogen effluent withdrawn from the first column 14 to which the combined air stream is fed and from which oxygencontaining liquid is withdrawn and expanded at a valve 16, into the second column 17. Liquid further enriched in oxygen is withdrawn from column 17 and is partially evaporated in an exchanger 20 warmed by nitrogen effluent from column 14 and following separation in a vessel 23 liquid containing 60-70% oxygen is expanded at a valve 25 into an inner portion of the column 14 where it is vaporized and discharged as product through regenerator 12.
Patent GB-516192-A (GB)
Title: Improvements in and relating to electric alarm systems
IPC: G08B27/00
Filed: 1938-07-12
Abstract: 516,192. Electric signalling systems. CARPENTER, R. E. H., and ECKERSLEY, P. P. July 12, 1938, Nos. 20695 and 30189. [Class 40 (i)] Alarm signals comprising an audible signal in the range of high audibility, e.g., 900 cycles - 1,200 cycles, are transmitted by connecting two higher frequencies such as 4,000 cycles and 5,000 cycles to the mains and arranging a receiver which responds to the difference frequency only. Alternately the transmitter frequency could comprise a relatively high frequency modulated by the alarm frequency. The receiver could comprise apparatus as indicated in Fig. 4 comprising band pass filter C3, L1, L2, C4, a dry contact push-pull rectifier R and a sound emitter E resonant at the alarm frequency. If necessary electric or mechanical filters may be employed. Alternatively the alarm receiver could be combined with a wireless receiver as indicated in Fig. 5, the loudspeaker being connected to the mains through filter F when switch s is connected as shown. The filter F includes a filter selective to the alarm frequency or a separate tuned alarm emitter could be provided.
Patent GB-416404-A (GB)
Title: Improvements in the recovery of carbon disulphide and methyl alcohol from aqueous solutions obtained in the purification of benzole with methyl alcohol and caustic alkali
IPC: C01B31/26
Filed: 1933-03-06
Abstract: In purifying benzole by treatment with a solution of caustic soda or potash in methyl alcohol or with methyl alcohol and solid alkali, separation of the treating agents from the benzole is effected by adding water in quantity not more than the volume of methyl alcohol and the aqueous liquid is treated to separate methyl alcohol and carbon bisulphide.  The aqueous liquid is neutralized with dilute mineral acid preferably by pouring it into the acid or with sulphur dioxide, and is passed into a still fitted with a column.  The first runnings consisting of a constant boiling mixture of carbon bisulphide and methyl alcohol boiling at about 36--37 DEG  C. are collected under water.  Carbon bisulphide forms a lower layer and the upper layer of aqueous methyl alcohol is returned to the still.  The receiver is changed at about 60 DEG  C. when all the carbon bisulphide has distilled, and concentrated methyl alcohol distils over.  The carbon bisulphide is purified by washing with dilute alkali, water, and dilute sulphuric acid.ALSO:In purifying benzole by treatment with a solution of caustic soda or potash in methyl alcohol, separation of the treating agents from the benzole is effected by adding water in amount not more than the methyl alcohol, and the aqueous liquid is treated to separate carbon bisulphide and methyl alcohol.  The aqueous liquid is neutralized with dilute mineral acid preferably by pouring it into the acid, or with sulphur dioxide and is passed into a still fitted with a column.  The first runnings consisting of a constant boiling mixture of carbon bisulphide and methyl alcohol boiling at about 36--37 DEG  C. is collected under water.  Carbon bisulphide forms a lower layer and the upper layer of aqueous methyl alcohol is returned to the still.  The receiver is changed at about 60 DEG  C. to receive concentrated methylalcohol.